<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .box {
            width: 100px;
            height: 10px;
            background-color: red;
            box-shadow: 10px 10px 10px 10px yellowgreen, 10px 10px 10px 10px black;
        }

        .box1 {
            width: 100px;
            height: 100px;
            background-color: burlywood;
        }

        .box2 {
            width: 100px;
            height: 100px;
            background-color: orange;
            box-shadow: 10px 10px 0px 0px green;
        }

        .box3 {
            width: 100px;
            height: 100px;
            background-color: #ccc;
            border-radius: 25%;
            box-shadow: 10px 10px 0px 0px yellowgreen inset;
        }
    </style>
</head>

<body>
    <div class="box"></div>
    <div class="box1"></div>
    <div class="box2"></div>
    <div class="box3"></div>
</body>

</html>